﻿/**
 * MOTOR 2 - RAPID FLASH DYNAMICS
 * Copyright (c) 2006-2008 Michael Baczynski http://www.polygonal.de
 * 
 * Based on Box2D by Erin Catto, http://www.box2d.org
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 * 
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 * 
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */
package de.polygonal.motor2.collision.nbody
{
	import de.polygonal.motor2.dynamics.contact.Contact;
	
	public interface IPairCallback
	{
		function pairAdded(proxyUserData1:*, proxyUserData2:*):Contact

		// This should free the pair's user data. In extreme circumstances, it is possible
		// this will be called with null pairUserData because the pair never existed.
		function pairRemoved(proxyUserData1:*, proxyUserData2:*, pairUserData:*):void
	}
}
